Three things about rollers:
1) mounting: When starting out you place the bike on the rollers with supports on both sides of you, i.e., a hallway; or a dresser and a chair. You also need a step stool of some sort to get up onto the bike and start rolling. Eventually, people can ride up to rollers and mount them from the rear; or bunny hop onto them.
2) riding: When you first start riding rollers you might/will need to hold on to a wall or structure/dresser/chair to find your balance. After a few sessions you should be able to ride w/o support. You can then learn to ride one-handed, then no-handed. After a few more sessions you will be able to do out of saddle sprints. Key is to keep speed up.
3) dismounting: Unclip/release one foot and place on foot support/step stool. Then dismount. Some people also just bunny hop off.
Initially, you will fall off a few times maybe, but over time you find your balance and be alright.
Rollers are fun. Trainers are more of a serious workout.
Originally Posted by drkbkr
The one thing I don't like about my fluid trainer is I can't stand up and rock the bike back and forth like I do on the road. Can you do that on rollers?
On rollers, you will find yourself all over the place if you rock the bike back and forth. Rollers teaches you fluidity, balance and smoothness. After a few sessions of standing up you won't need to rock side to side to increase power transfer. Stay smooth and efficient.